Revert "service file: allow for waybar installed in different prefix"

meson.build

@@ -66,13 +66,8 @@ systemd = dependency('systemd', required: get_option('systemd'))
 
 if systemd.found()
   user_units_dir = systemd.get_pkgconfig_variable('systemduserunitdir')
-
-  configure_file(
-    configuration: config,
-    input: './resources/waybar.service.in',
-    output: '@BASENAME@',
-    install_dir: user_units_dir
-  )
+  install_data('./resources/waybar.service',
+    install_dir: user_units_dir)
 endif
 
 src_files = files(

resources/waybar.service

@@ -6,7 +6,7 @@ PartOf=wayland-session.target
 [Service]
 Type=dbus
 BusName=fr.arouillard.waybar
-ExecStart=@prefix@/bin/waybar
+ExecStart=/usr/bin/waybar
 
 [Install]
 WantedBy=wayland-session.target